Mold.



'J. G. GOOMER.

MOLD;

APPLICATION FILED MAR.24,1908.'

Patented Ndv.10,1908.

2 SHEETSSHBET 2.

4 lvwowtoz Wit wan: v

To all whom it may concern:

' for expanding section. Fig. 3 .38 of Fig. 1. .Fig. 4.

' the form around which the cement is molded.

pipe, without the necessity of a man enterbe made ofsheet iron or the like,

I the shell in shape. one at each end,

central guides 9 on aMEso'. GOOMEB, or BELLEVILLID, moruoAN.

MOLD

Specification of Letters Patent.

' Patented Nov. 10, 1908.

- Application fiia March 24, 19.08. Serial No. 422,937.

Be it known that LJAMES G. GooMER, a citizen of the United States, residing at Bellevil-le, in the county of \Va'yne and State of Michigan, have invented certain new and useful Improvements in Molds, of which the following is a specification.

This invention isan expanding mold, particularly adapted andintendeol for molding seweripipes; culverts and the like in the place or site .where they are to remain, and has for its object to provide improved means or collapsing the shell of the mold, in such withdrawn when the structure is completed.

- The details of the'invention "will more fully appear from the following descriptlon and the v accompanying drawings,

Figure 1 isa top plan View of the mold, the upper part of the shell being broken away or removed. Ijig. 2 is a longitudinal is a t moss section on the line is an end view with the mold partly collapsed. Fig. 5 is afront elevationof a modification. Fig-6 is a longitudinal section of the parts shown. Fig. 5. I

In some machines now in use it is necesof the bars 15, and tomsurc man to enter the pipe to release sary for a or whatever is used to sustain the braces This isimpractical with small pipes, and the present invention is designed toprovide means whereby the supporting parts may be expanded or contracted from the end of the ing the same. The device isalso similarly useful for large sewers or pipes, since it may be made any desired size, according to the work to be done.

The lower half of semi-circular shell or casing the mold consists of a 6, which niay and this is secured at the ends to cast iron semi-circular crescents or Two of these are shown, but the number may 'be increased by the addition of intermediate I similar-heads, in the case of long pipe.

. At the center of the form is a longitudinal rod 8jthe ends of which 'extend through I the head plates 7. One end of the rod is threaded to receive a hand wheel nut 10 which is' supported by abracket manner that it can be easily I iron or materlal sufficiently flexible or contracted when the arms 1 serted in theends of itions 7 of the heads. 1 These ,tions 17 are of proper size heads 7 which support :11 secured to thehead'plate, and by turning this nut the rod can be moved lengthwise to expand or contract the upper part of the form The rod carries a series of toggle arms 12 projecting horizontally on opposite sides thereof, and each turn buckle 13 whereby it may with respect to its length. pivotally connected at 14 to the long rod 8, and at their outer ends are pivotally connected to parallel side bars 15against which be adjusted the side ed es of the upper part 16 of the This. shell is semi-circular in shell rest. form'when expanded, but is made of sheet it to be bent '15 aredrawn together by appropriatemovement of the rod 8. The heads are .completed and the upper part ofthe shell stiffened or held in form when expanded by. means of removable segments 17 made of cast'iron or the like and adapted to be in the upon lugsupp'er head secand shape to fit snugly within-the ends of the upper section 16 of the shell. i

In order to prevent any endwise movement the spreading or expansion-thereof, they .are connected by "long links 19 to a block 20 which is mounted upon the lower shell section 6 and fixed within the same, at about the middle thereof. Thus when the-rod 8 is operatedthe bars 15 do not move lengthwise, but in consequence of the links 19 the bars. are spread apart or drawn together, which expands or contracts the upper part of the shell accordingly.

In the use of theapparatus the lower form toggle arm has The arms are.

to allow form and supported 18 formed :upon the lower secsection 6 with the heads 7 are set in place,

with the upper form section 16 thereon, and

the nut 10 is turned to advance the rod 8 and expand the upper section to full size. The upper head sections 17 are then set inplacc and the mold is ready to receive theconcrcte filling. 'To remove the mold, the head pieces turned to retract the draws the bars 15 together, thereby drawing the sides of the upper mold section l6-and bending the same along the middle 17 are first taken out and then the nut 10 is rod 8 which contracts or. with llO the mold may be pulled out. The upper part 16. of the shell rests at its ends upon the upper inclined edges 21 of the heads 7 and these edges are sufficiently inclined toward thecenter that when the upper section 16 is collapsed the shell will fall or be drawn away from the upper part of the concrete;

structure; and also said inclines 21 act when I. the bars are expanded to'guide the movement of the} upper part of the shell and in crease thesame to its full size, to match with .the lower part 6 of the shell.

- indicated at 23.

,The apparatus may be made as-long or "short as desired, according to the nature of the work at hand.

The modified form shown in Fig.4 is particularly' useful for pipes of large size; or

shaft or rod 24; being usedwhi'chexten s Z25 lengthwise through the mold and is sup-'- ported in bearings upon the headpieces 7.

At the opposite ends this shaft has spur gears 25 which mesh with'gears 26 which in turn mesh with gears 27,, the latter being. supported respectively upon stub shafts 28, and'- 29 fixed to thehead pieces 7. Eachof the gears 26 and 27 has a wrist pin 29 connected by a rod 3O to the lower ends of the'bi'aces 22. When the shaft 24 is turned the gears are rotated, which'advances or retracts the rods 30, according to the direction of rotation, and so expands or contracts the upper mold section; and when the mold is contracted the Whole.

:section provided with arcuat'e hea inwardly and downwardly inclined upper edges, an upper collapsible section'resting at structure can be pulled out of the sewer or culvert, or moved along for-the next"opera'- tion, by any. appropriate means.

Various modifications may be made within tracting the upper section of the lnold.

Icl mi j 1'. A collapsible mold comprisin a lower ds having its ends upon the upper edges of said' heads,

and means to expand and contract said upper section. 2. A collapsible niold comprising a lower shell provided with semi-circular head sec;

tions, an upper colla sible shell restin I at its ends upon saidhea s; means to expand-or contract said upper shell, andremovable head sections adapted'to'be insertedinthe ends of said up er shell when expanded. 3'. A collapsible mold comprisingalower .shell provided with head sections at the ends,

the scope of the invention, particularly'with I respect to the means for expanding and conhaving central guides, a longitudinally mov able rod slidable in said lengthwise movement of the latter, an upper collapsible shell, resting at its s'ide edges' against thebars, and means to operate the rod to expand said upper Shell." a

'des,toggles con .nected to the rod,.para1le' bars connectedto the outer endsof the to tothe lower shell and to -the bars, toi'prevent ggles; links connected ;In testimony whereof I afiix my signature,

in presenceof two witnesses. I

I JAMES e. OOOMEP Witnesses: I

l CoRA E. HEMPEL,

ELIZABETHIMJ. PRICE. 

